<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"/>
    <link rel="stylesheet" href="css/bootstrap.min.css"/>
    <style>
        body {
            margin-top: 20px;
        }

        .container {
            outline: 1px solid red;
        }

        .row div.row {
            background: red;
            color: #FFFFFF;
        }
    </style>
	</head>
	<body>
		<div class="container">
    <div class="row">

        <div class="col-md-8">
            Level 1:col-md-8
            <div class="row">
                <div class="col-md-6">Level 2:col-md-6</div>
                <div class="col-md-6">Level 2:col-md-6</div>
            </div>
        </div>
        <div class="col-md-4">Level 1:col-md-4</div>
    </div>
</div>
	</body>
</html>
